At first glance, you'd think it's good to be a big boy. Ethan Lavallee is just 12 years old, and he already runs 6-foot-5½, 192 lbs. This should be an advantage in peewee hockey, and beyond—if Outliers' theory on young players' physical development carrying over through the rest of their lives is accurate, Lavallee… »10/23/12 3:45pm 10/23/12 3:45pm